Repair of broken PV modules [RE-wrenches]

Doug Pratt dpratt at pacific.net
Mon Feb 4 19:12:32 PST 2002


I'd be real leery of varnish Windy. The soaking into the cracks part is
good, but I come from a Great Lakes boating family, and even the best
modern varnishs don't last more that 2-4 years in full sun! They also
yellow with age, which is cool on wood, but very uncool on PV modules.

-Doug Pratt

-----Original Message-----
From: Windy Dankoff, Dankoff Solar [mailto:windy at dankoffsolar.com]
Sent: Monday, February 04, 2002 10:04 AM
To: RE-wrenches at topica.com
Subject: Repair of broken PV modules [RE-wrenches]


Wrenches,

When a PV module is shattered but still works, it's necessary to seal
moisture out of it, or conductive strips will corrode and break the
circuit.

I used to glue plexiglass over the module, and accept 15 or 20% loss.
A backwoods wrench told me he paints it over with urethane varnish,
which soaks into the cracks (it seals, and helps optically too).

It seems to last for some years.

Anybody have experience with this?

Windy

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